The construction of the Lake Zumbro Hydroelectric Power Plant dam began in 1917. The structure was designed by noted hydroelectric engineer, Hugh Lincoln Cooper. The dam, completed in 1919, is owned by Rochester Public Utilities. Men are seen...

The construction of the Lake Zumbro Hydroelectric Power Plant dam began in 1917. The structure was designed by noted hydroelectric engineer, Hugh Lincoln Cooper. The dam, completed in 1919, is owned by Rochester Public Utilities. The power house...

Olmsted County Historical Society

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